Home / 672,139.20-1,008,208.80-614,078.40

Finding the Fourth Proportional to 672,139.20, 1,008,208.80 and 614,078.40

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Solution

The fourth proportional to 672,139.20, 1,008,208.80 and 614,078.40 is: 921,117.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,139.20 : 1,008,208.80 = 614,078.40 : x
  2. Step 2: Convert to fraction form
    672,139.20/1,008,208.80 = 614,078.40/x
  3. Step 3: Cross multiply
    672,139.20x = 1,008,208.80 × 614,078.40
  4. Step 4: Simplify right side
    672,139.20x = 619,119,246,769.92
  5. Step 5: Solve for x
    x = 619,119,246,769.92/672,139.20
  6. Step 6: Final answer
    x = 921,117.60

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.